Eyes

Eyes

Your eye is amazing- and here is ten random facts about them!

Your eyelids and eyelashes help protect your eyes from dust, dirt and germs from entering them.
Your eyeball is as big as a ping-pong ball.
Your eye sees an image upside down, so your brain flips the image the right way up.
Tears are made of water, chemicals and oil.
If your cornea and retina do not work together your vision will be blurry.

Eye, human, ten random facts

Eye muscles move more than 100,000 times a day.
The cornea, the visible part of your eye, is the only part of your body that should not contain any blood.
Your eye has a jelly-like coating, scientifically named vitreous humour, that moulds your eyeballs into a round, spherical shape.
32% of the world’s population have blue or grey irises,12% of the world’s population have green or light brown irises and 25% of the world’s population have dark brown irises.
Your eye uses cells called rods, which sees gray-scale, and cones, which see colours. 1 eye has about 120 million rods and 7 million cones.